摘要
采用多孔聚合物载体固定化微生物在厌氧流化床（ＡＦＢ）反应器中处理含硫废水，研究反应器抗硫化物（Ｓ^（２－））毒性抑制和抗硫酸盐毒性抑制的能力；探索解除 Ｓ^（２－）毒性的方法．研究表明，当进料基质 ＣＯＤ浓度为 ５０００ｍｇ／Ｌ，ＨＲＴ为 ５．２－５．４ｈ，Ｓ^（２－）＜２００ｍｇ／Ｌ时，反应器去除 ＣＯＤ效果不受影响，Ｓ^（２－）＞３５０ｍｇ／Ｌ时，厌氧消化受到明显抑制，反应器可容忍５３０ｍｇ／Ｌ Ｓ^（２－）浓度而未造成消化系统的破坏；ＳＯ_４^（２－）浓度高达３５２１ｍｇ／Ｌ，ＣＯＤ去除率仍可达７７％－８０％，但ＳＯ_４^（２－）去除率明显下降；当ＣＯＤ／ＳＯ_４^（２－）的比值大于１．４５时，硫酸盐还原菌和产甲烷菌的生长未受到明显抑制，此时容积负荷为２２－２４ｋｇＣＯＤ／（ｍ~３·ｄ），ＣＯＤ去除率为８０％，ＳＯ_４^（２－）去除率为５８．８％；向反应器投加适量ＦｅＣｌ_２可很好地解除Ｓ^（２－）的抑制．
Treating sulfur-containing wastewater in anaerobic fluidized bed(AFB) reactor with polymer porous carriers, the ability of resisting sulfide and sulfate toxicity inhibition has been studied; and the removal of S^(2-) toxicity has also been researched. It is indicated that when COD concentration of influent was 5000mg/L, HRT was 5.2-5.4h and sulfide concentration was below 200mg/L, sulfide toxicity had no effect on reactor's COD removal effect. When S^(2-)>350mg/L, the anaerobic removal reaction would be inhibited obviously; the reactor could stand 530mg/L of sulfide concentration without causing damage of the removal system. When SO_4^(2-) was 3521 mg/L, COD removal rate can still reach 77%~80% but SO_4^(2-) removal rate decreases obviously. When COD/SO_4^(2-)>1.45, COD removal rate was 80%,SO_4^(2-) removal rate was 58.8%, volumetric load was 22-24kgCOD/m^3·d, and the growth of SRB and MPB was not obviously inhibited. When adaptive amount of FeCl_2, was added,the sulfide inhibition can be removed very well.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2000年第4期378-381,共4页
China Environmental Science
基金
国家自然科学基金!(29676027)
关键词
厌氧流化床
硫酸盐
废水处理
含硫废水
毒性
anaerobic fluidized bed
sulfide (S^(2-))
sulfate reduction
toxicity inhibition
wastewater treatment
